MOLECULE · MATERIA №15
Vitamin C
Collagen, immunity, and the brightening of skin.
- Family
- molecule
- Origin
- Citrus, acerola, kakadu plum
- Format
- Capsule, powder, or topical serum
- Best taken
- Morning, AM serum under SPF
Humans are one of the few mammals that cannot make their own vitamin C. We must source it daily from food.
It is essential for collagen cross-linking, neurotransmitter synthesis, and the regeneration of other antioxidants like vitamin E.
How it works in the body
Inside the body it supports collagen synthesis and immune cell function. Topically, L-ascorbic acid in low pH brightens, evens tone, and complements daily SPF.
What you can expect
Collagen synthesis
Required cofactor for the enzymes that build collagen.
Good for: skin · hair
Immune function
Supports immune cell activity and recovery from infection.
Good for: immunity
Skin radiance (topical)
Brightens, evens tone, complements SPF.
Good for: skin
04 — PROTOCOL
200–500 mg internally per day. Topical 10–20% L-ascorbic acid serum in the morning, followed by SPF.
05 — SOURCING
Look for buffered or whole-food vitamin C internally. Topically, L-ascorbic acid in airtight, opaque packaging — it oxidizes on air contact.
06 — CAUTION
Topical L-ascorbic acid can sting on broken skin. Internally, very high doses may cause loose stools.
07 — PRODUCTS
Products with Vitamin C
08 — PAIRS WELL WITH
Build the stack
Honest answers
- Topical or oral?
- Both, for different reasons. Internal vitamin C supports collagen from within; topical brightens and protects against oxidation at the surface.
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